It is definitely worthwhile; the format of the Shakespeare question is almost identical- a small section of text to analyse in depth and to then link more widely to the text as a whole. I can't remember without checking what the main differences in mark schemes are but the AOs are the same. I use generic questions to cover OCR, AQA and EDEXCEL because the texts are the same and the questions are similar too.
The same goes for the modern text question (your ds is likely doing An Inspector Calls, Lord of the Flies or DNA) and the 2 parts of the Poetry paper as well as the pre 20th C text. I would avoid OCR for poetry revision and the modern text because their format is quite different, but AQA and EDEXCEL are very similar.
I would disagree with Daogroupie regarding CIE and IGCSE though - their questions are not similar, and in any case they still allow the Shakespeare to run as a coursework component (remember those?

) so not much use to you.